--- product_id: 369095658 title: "LIJIANI 18650 Power Bank Case Portable DIY Battery Pack" brand: "lijiani" price: "S$39" currency: SGD in_stock: true category: "Lijiani" url: https://www.desertcart.sg/products/369095658-lijiani-18650-power-bank-case-portable-diy-battery-pack store_origin: SG region: Singapore --- # 5V/2A dual USB & Type-C output Smart LCD voltage & power display 4x 18650 battery slots LIJIANI 18650 Power Bank Case Portable DIY Battery Pack **Brand:** lijiani **Price:** S$39 **Availability:** βœ… In Stock ## Summary > πŸ”Œ Charge smarter, carry lighter β€” power that fits your hustle. ## Quick Answers - **What is this?** LIJIANI 18650 Power Bank Case Portable DIY Battery Pack by lijiani - **How much does it cost?** S$39 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/369095658-lijiani-18650-power-bank-case-portable-diy-battery-pack) ## Best For - lijiani enthusiasts ## Why This Product - Trusted lijiani brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Safety First:** Built-in bad battery detection and reverse polarity protection keep your devices safe and sound. - β€’ **Power Your Way:** Transform spare 18650 batteries into a versatile portable power bank with dual fast-charging ports. - β€’ **Compact & Ready:** Pocket-sized design with a bright flashlight functionβ€”perfect for on-the-go professionals. - β€’ **DIY Power Mastery:** Ideal for tech-savvy millennials who love customizing and maximizing their gear’s potential. - β€’ **Stay Informed Instantly:** Real-time LCD display shows voltage, current, and remaining battery capacity for total control. ## Overview The LIJIANI 18650 Power Bank Case is a compact, portable DIY battery pack that holds four 18650 lithium-ion cells (not included) and converts them into a dual-port fast charger with USB and Type-C outputs. Featuring a smart LCD display for real-time voltage and power monitoring, it includes safety features like bad battery detection and reverse polarity protection. Lightweight and pocket-sized, it also offers a built-in flashlight, making it an essential power solution for professionals who demand flexibility and control on the go. ## Description desertcart.com: LIJIANI 18650 Power Bank Case Portable DIY Battery Pack | LCD display of capacity, reverse installation detection, overcharge protection. : Cell Phones & Accessories ## Features - Multi-functional 18650 Battery Charger: Holds 4 batteries (0.7 inches in diameter, 2.56 inches in length), equipped with an LCD display showing battery voltage, current, and remaining power. Batteries can be easily removed to power other devices (NOT Included battery) - Type-C Dual-Function Fast Charger: Compatible with 3.7V/3.6V Lithium-ion Rechargeable Batteries, features dual output ports for convenient charging (NOT Included battery) - Dual-port Output Configuration: USB and TYPE-C ports provide 5V-2A output, long press the switch to activate the flashlight function (NOT Included battery) - Bad Battery Detection Function: If you load a bad battery, or the battery positive and negative poles are installed backwards, no battery symbols on the LCD display, only normal batteries appear battery symbols - Package Contents: Includes 1 M09 battery charger, 1 USB-C data cable, 1 instruction manual (Battery not included). Those unfamiliar with lithium batteries or lacking a DIY spirit should purchase with caution - Smart LCD Display Technology: Real-time monitoring of battery status with clear digital readouts of voltage, current flow, and remaining power capacity for each battery slot - Portable Power Bank Functionality: Converts your rechargeable 18650 batteries into a portable power source with dual USB outputs to charge smartphones, tablets, and other USB-powered devices on the go ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B094FF9P58 | | Amperage | 2 A | | Battery Capacity | 10000 amp_hours | | Battery Cell Type | Lithium Ion | | Battery Charge Time | 12 | | Best Sellers Rank | #43,470 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #1,159 in Cell Phone Portable Power Banks | | Brand | LIJIANI | | Color | case | | Compatible Devices | Smartphone | | Connector Type | Micro USB, USB Type C | | Customer Reviews | 4.1 4.1 out of 5 stars (173) | | Item Dimensions | 4.49 x 3.23 x 0.94 inches | | Item Weight | 118 g | | Manufacturer | LIJIANI | | Maximum Output Power | 10 WATTS | | Mfr Part Number | M09a | | Model Number | M09 | | Number of Batteries | Lithium Polymer batteries required. | | Number of Ports | 2 | | Other Special Features of the Product | Digital Display, Fast Charging, Pocket Size | | Output Current | 2 A | | Output Wattage | 10 watts | | Power Source | Battery Powered,Corded Electric,Rechargeable | | Reusability | Rechargeable | | UPC | 754469737440 | | Unit Count | 1 Count | | Voltage | 5 volts | | Warranty Description | 1 year | ## Product Details - **Battery Capacity:** 10000 amp_hours - **Brand:** LIJIANI - **Color:** case - **Connector Type:** Micro USB, USB Type C - **Special Feature:** Digital Display, Fast Charging, Pocket Size ## Images ![LIJIANI 18650 Power Bank Case Portable DIY Battery Pack - Image 1](https://m.media-amazon.com/images/I/71Zs4972s0L.jpg) ## Questions & Answers **Q: how long charge?** A: Charge until all of the bars (in display window) are continuously lit up and the "in" volt should read about 5 volts but more importantly the "in" current will read zero. The amount of time it takes to reach the fully charged state varies drastically depending on the charger you use and also the capacity of lipo batteries that are used. Mine takes a couple of hours to charge and I am using 4x 2000mah lipo batteries with a USB 2.0 2 amp basic wall charger. Hope this helps. **Q: Will this also charge Cr 123a if you stack 2 together** A: No it will not fit. Only 18650! **Q: Does it charge the batteries independently? If I replace one full battery with a dead one, will it charge just the one dead battery?** A: Yes, and you can see how full each battery is **Q: Can this use a solar panel to charge?** A: I dont see why it wouldn't work with solar charging ## Frequently Bought Together - LIJIANI Battery Charger Case,Portable DIY Power Bank Box with LCD Display 2 USB Output,Micro and Type c Input, Smart Charger for 3.7v Li-ion Rechargeable Battery (Battery Not Included) - LHIABNN DIY Power Bank - Make Your Own External Battery Pack,2 Output 3 Input (Mirco,Type C,Lighting) - Battery Not Include (Black) - LHIABNN DIY Power Bank Box Flat Head Battery Charger Outer Case,2 USB Output Ports Plastic Shell Box with LCD Display,Micro/Phone/Type-c Input Port Power Bank Case (Black) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/369095658-lijiani-18650-power-bank-case-portable-diy-battery-pack](https://www.desertcart.sg/products/369095658-lijiani-18650-power-bank-case-portable-diy-battery-pack) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-10-05*